3 5 Inch FPV Drone Motor Testing

What is the best size motor for a 3.5 Inch FPV Drone? I'm comparing the 2 main contenders - 1504 and 1604 size motors to see which is best.
Timestamps:
0:00 Intro
0:58 Looking at Motor Selections
2:03 Looking at AMAX RC 1504 Motors
7:17 Looking at Rotor Riot 1604 Motors
8:34 Looking at TMotor 1604 Motors
9:40 Comparing 1504 and 1604 Motors Stator Volume
10:30 Listening to the Motors and Comparing
11:17 Flight Testing - Punchouts
12:01 Flight Testing - Straight and Level
13:06 Flight Testing - Yaw Spins and Throttle Control
14:37 Propwash and Dynamic Idle
15:07 Betaflight - Setting Dynamic Idle
16:20 Flight Testing - Propwash and Dynamic Idle
17:20 Propwash and Dynamic Idle Testing Results
17:55 Inverted Yaw Spin Testing
18:06 Inverted Yaw Spin and Dynamic Idle Explanation
18:30 My Thoughts and Test Results
19:33 Throttle Scaling
20:00 6S Recommendations
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[@mu7095]

I'm loving 3.5", thanks for this!

[@SbangFPV]

Thank you for the valuable research. I’m also running pacers 1604 2850kv 6s on my 3.5”Quadmula with 3.6” props. And they’re amazing. Perfect combo. I used to run 1604s on my 2.5” but ran on very high rpm. Not I’ve switched to tmotor 1404 ??kv 6s. 2.5” props. Much better now. Maybe a higher stator size may be perfect.

[@cubefpv]

Thanks for sharing this info on 3.6 inch. For sure 2800 to 3100 is the best choice for either 3.5 or 3.6 inch on 6S.

[@kingjam6433]

Great review mate, actually looking at these motors for my 4 inch long range as the 1404 are just not enough 👍

[@cubefpv]

Thanks, yes these may be good for long range. I'd be interested to hear how they perform.

[@hookedfpv3219]

I built a grinderino 3.5” and used 1605 3800kv umagawd motors have you heard of them if so your thoughts

[@cubefpv]

Just checkled out the Ummagawd 1605 motors. I've not had any experience with them but the Ummagawd Aerolite range have a good reputation. I would have thought that 1605 would be a bit overpowered for a 3.5 inch. I wonder what sort of flight time you are getting with this motor with freestyle flying.